Perencanaan Koordinasi Proteksi Gangguan Hubungan Singkat Pada Sistem Distribusi DC Di Kapal Trimaran Bertenaga Hybrid Menggunakan Topologi Zonal

Damayandi, Dimas (2023) Perencanaan Koordinasi Proteksi Gangguan Hubungan Singkat Pada Sistem Distribusi DC Di Kapal Trimaran Bertenaga Hybrid Menggunakan Topologi Zonal. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Kapal merupakan alat transportasi yang mulai banyak digunakan diseluruh dunia. Salah satu sistem yang terpenting untuk menunjang operasional kapal adalah sistem kelistrikan. Salah satu pengembangan dari sistem distribusi daya pada kapal adalah sistem distribusi zonal. Sistem distribusi zonal menawarkan penggunaan daya yang lebih efisien, dan kontinuitas daya yang lebih baik. Distribusi zona dapat dilakukan dengan sistem AC maupun sistem DC. Dalam pendistribusian kelistrikan bisa terjadi kegagalan yang disebabkan oleh faktor internal maupun eksternal. Banyak sekali gangguan yang ditemukan pada sistem kelistrikan salah satunya adalah gangguan hubungan singkat (short circuit). Dalam penelitian ini untuk menentukan berapa besar gangguan arus hubungan singkat (short circuit) menggunakan software simulasi koordinasi proteksi. Proses simulasi dilakukan pada setiap bus di empat kondisi utama kapal yaitu sailing, maneuvering, loading unloading, dan at port. Jika dilihat dari tiap kondisi nilai arus short circuit yang terjadi pada kondisi sailing mengalami penurunan hingga 59,9% dari sebelum rekonfigurasi sebesar 136,49 kA sedangkan setelah rekonfigurasi sebesar 54,651 kA. Kemudian pada kondisi maneuvering nilai arus short circuit mengalami penurunan hingga 51,4% dari sebelum rekonfigurasi sebesar 139,07 kA sedangkan setelah rekonfigurasi sebesar 67,527 kA. Selain itu juga pada kondisi at port nilai arus short circuit mengalami penurunan hingga 68,8% dari sebelum rekonfigurasi sebesar 134,15 kA sedangkan setelah rekonfigurasi sebesar 41,778 kA. Terakhir pada kondisi loading unloading nilai arus short circuit mengalami penurunan hingga 92% dari sebelum rekonfigurasi sebesar 130,77 kA sedangkan setelah rekonfigurasi sebesar 11,638 kA. Hasil simulasi telah dianalisis untuk menentukan koordinasi proteksi terbaik agar tidak mengganggu kapal dalam beroperasi. Berdasarkan dari ke-empat kondisi bahwa pada sistem distribusi zonal pada bus load machinery 1, bus supply exhaust JL, JC, JM memiliki perbedaan nilai arus operasi (load flow) dikarenakan beban yang berada pada bus tersebut dapat diatur persentase operasinya dan dapat diatur secara continuous maupun intermitternt. Berdasarkan empat kondisi yang telah dilakukan analisis didapatkan kesimpulan bahwa setelah dilakukan proses rekonfigurasi terjadi penurunan nilai arus short circuit yang terjadi baik di tiap bus beban ataupun di tiap kondisi. Kenaikan dan penurunan arus short circuit juga dipengaruhi oleh jumlah beban yang berada pada distribusi tersebut.
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Ships are a means of transportation that is starting to be widely used throughout the world. One of the most important systems to support ship operations is the electrical system. One of the developments of the power distribution system on ships is the zonal distribution system. Zonal distribution systems offer more efficient power usage, and better power continuity. Zonal distribution can be done with AC systems or DC systems. In the distribution of electricity, there can be failures caused by internal and external factors. There are so many disturbances found in the electrical system, one of which is a short circuit disturbance. In this study to determine how much short circuit current interference (short circuit) using protection coordination simulation software. The simulation process is carried out on each bus in the four main conditions of the ship, namely sailing, maneuvering, loading unloading, and at port. When viewed from each condition, the short circuit current value that occurs in sailing conditions has decreased by 59.9% from before the reconfiguration of 136.49 kA while after the reconfiguration it is 54.651 kA. Then in maneuvering conditions the value of short circuit current decreased by 51.4% from before reconfiguration of 139.07 kA while after reconfiguration it was 67.527 kA. In addition, in the at port condition, the short circuit current value decreased by 68.8% from before the reconfiguration of 134.15 kA while after the reconfiguration it was 41.778 kA. Finally, in the loading unloading condition, the short circuit current value has decreased by 92% from before the reconfiguration of 130.77 kA while after the reconfiguration it is 11.638 kA. The simulation results have been analyzed to determine the best protection coordination so as not to interfere with the ship in operation. Based on the four conditions that the zonal distribution system on the load machinery 1 bus, JL, JC, JM exhaust supply bus has a different value of operating current (load flow) because the load on the bus can be set percentage of operation and can be set continuously or intermittently. Based on the four conditions that have been analyzed, it is concluded that after the reconfiguration process, there is a decrease in the value of short circuit currents that occur both in each load bus or in each condition. The increase and decrease in short circuit current is also influenced by the number of loads in the distribution.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Ship, Bus, Zone, Short Circuit, Software, Distribution
Subjects:	V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM773 Ship propulsion, Electric
Divisions:	Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis
Depositing User:	Dimas Damayandi
Date Deposited:	07 Feb 2023 03:31
Last Modified:	07 Feb 2023 03:31
URI:	http://repository.its.ac.id/id/eprint/96355

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